I think hearing the assessment of CJ's play on this past Sunday from a former NFL QB sums up everything https://go.audacy.com/WPB7t2z3XYbhttps://go.audacy.com/WPB7t2z3XYb
Coaches that have a pedigree of developing guys and recognizing talent is as important as anything. Mahomes also getting to sit for a year was invaluable apprentenship training (Favre, Love, Young had it too). The only NFL QB that I know of that survived an awful offensive line situation early on (and bounced back to have a HOF career) is Aikman… and he ended up having one of the best o-lines and skill player combinations of all time. Those early years were brutal though and he got hit hard.